NCIS investigates the murder of former Marine, Nick Heatherton, when his buddy, Marine Damon Werth, shows up at Gibbs' house looking for help.
In order to make ends meet, Heatherton was working for the not so savory Szwed shipping company driving semi-trucks cross country.
Werth was offered a job with Szwed but declined.
The team learns that the mysterious contents in the semi that our victim was transporting may have been worth killing over ... but what?
Werth and Ziva go undercover to work for Aaron Szwed who forces them to high-jack another truck. Still no idea why, though.
Gibbs and old frenemy Tobias Fornell team up to track down the incoming truck only to discover that item to be high-jacked is a very expensive car that millionaire tycoon David Devoisier won from Szwed over a racing bet.
They bust the attempted hijacking of Szwed's own car by Szwed, but that's not all.
It turns out that Heatherton’s murder wasn’t about what was in the truck but rather to cover up a hit and run that he witnessed with Devoisier behind the wheel. Devoisier was racing across the country, hit a man and did not stop.